Quote Originally Posted by Mitch R View Post
What you have is the 4t60, with electronic torque converter lockup. Your transmission shifts on its own without input from the computer, except for torque converter lockup. Definitely sounds like it needs a rebuild unfortunately. If that's not an option, a transmission from a w-body car, which are grand prix, regal, lumina, and cutlass supreme from 90 to 93 sound work. 94 and up went to the 4t60-e, which will not work as it needs the computer to command gear changes.
Thank you for this information.
I was wondering the difference between the 4T60 and the 4T60-E.
It's very interesting.